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LONG-TERM DEBT AND FINANCING ARRANGEMENTS (Assets Sec) (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Arrangements |  |
Total assets securing notes payable or held under finance leases | $ 264,617 | $ 273,615
Less accumulated depreciation and amortization | 82,843 | 79,961
Net assets securing notes payable or held under finance leases | 181,774 | 193,654
Revenue equipment |  |
Financing Arrangements |  |
Total assets securing notes payable or held under finance leases | 255,398 | 264,396
Land and structures (service centers) |  |
Financing Arrangements |  |
Total assets securing notes payable or held under finance leases | 1,794 | 1,794
Software |  |
Financing Arrangements |  |
Total assets securing notes payable or held under finance leases | 1,484 | 1,484
Service, office, and other equipment |  |
Financing Arrangements |  |
Total assets securing notes payable or held under finance leases | $ 5,941 | $ 5,941

X
- Definition Amount of accumulated depreciation and amortization on property, plant and equipment pledged to secure a debt instrument. + References No definition available. + Details
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X
- Definition The gross amount of property, plant and equipment pledged to secure a debt instrument. + References No definition available. + Details
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Namespace Prefix: | arcb_
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X
- Definition The net amount of property, plant and equipment pledged to secure a debt instrument. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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X
- Details
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Namespace Prefix: |
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X
- Details
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- Details
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X
- Details
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Balance Type: |
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